Anchor for a concrete floor

ABSTRACT

An anchor for connecting a concrete layer of a floor to a cellulosic layer of the floor, the cellulosic layer comprising a plurality of cellulosic members joined together in a side-by-side arrangement, the anchor including a first portion to extend between two adjacent cellulosic members of the cellulosic layer into the concrete layer of the floor. The first portion includes attachment structure to attach the first portion to one of the two adjacent cellulosic members of the cellulosic layer to attach the anchor to the cellulosic layer. An upper edge margin of the first portion is disposed within the concrete layer when the first portion is attached to the cellulosic layer. A second portion extends from the upper edge margin in a first direction that is transverse to the first portion. The second portion is spaced apart from the cellulosic layer and embedded within the concrete layer of the floor to attach the anchor to the concrete layer.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims priority to U.S. application Ser. No.16/720,074, filed Dec. 19, 2019, which claims priority to U.S.Provisional Application No. 62/782,207, filed on Dec. 19, 2018, theentireties of which are hereby incorporated by reference.

FIELD

The present invention generally relates to concrete floors, and morespecifically, to an anchor connecting a concrete floor to a sub-floor.

BACKGROUND

The use of concrete floors in the building of structures is commonplace.One such concrete floor is a corrugated steel concrete floor, whereconcrete is poured over a corrugated steel deck supported by thebuilding. The corrugated steel deck must be thick enough in order tosupport the poured concrete, which adds significant weight to the floorthat must be supported by the structure of the building.

SUMMARY

In one aspect, an anchor for connecting a concrete layer of a floor to acellulosic layer of the floor, the cellulosic layer comprising aplurality of cellulosic members joined together in a side-by-sidearrangement, comprises a first portion having opposite upper and loweredge margins. The first portion is configured to extend between twoadjacent cellulosic members of the plurality of cellulosic members ofthe cellulosic layer into the concrete layer of the floor. The firstportion includes attachment structure configured to attach the firstportion to one of the two adjacent cellulosic members of the cellulosiclayer to attach the anchor to the cellulosic layer. The upper edgemargin of the first portion is configured to be disposed within theconcrete layer when the first portion is attached to the cellulosiclayer. A second portion extends from the upper edge margin in a firstdirection that is transverse to the first portion. The second portion isconfigured to be spaced apart from the cellulosic layer and embeddedwithin the concrete layer of the floor to attach the anchor to theconcrete layer.

In another aspect, a method of making an anchor that connects a concretelayer of a floor to a cellulosic layer of the floor, the cellulosiclayer comprising a plurality of cellulosic members joined together in aside-by-side arrangement, generally comprises cutting an anchor blankfrom a sheet of material. The method including forming a first portionfrom the anchor blank. The first portion has opposite upper and loweredge margins and is configured to extend between two adjacent cellulosicmembers of the plurality of cellulosic members of the cellulosic layerinto the concrete layer of the floor. The method including forming anattachment structure on the first portion. The attachment structure isconfigured to attach the first portion to one of the two adjacentcellulosic members of the cellulosic layer to attach the anchor to thecellulosic layer. The upper edge margin of the first portion isconfigured to be disposed within the concrete layer when the firstportion is attached to the cellulosic layer. The method includingforming a second portion from the anchor blank. The second portionextends from the upper edge margin in a first direction that istransverse to the first portion. The second portion is configured to bespaced apart from the cellulosic layer and embedded within the concretelayer of the floor to attach the anchor to the concrete layer.

Other features of the present disclosure will be in part apparent and inpart pointed out hereinafter.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a top view of a plurality of anchors according to oneembodiment of the present disclosure attached to a wooden sub-floor witha concrete form positioned over the wooden sub-floor;

FIG. 1A is a fragmentary perspective showing the anchor attached to thewooden sub-floor.

FIG. 2 is a perspective of a floor including a concrete layer pouredinto the concrete form of FIG. 1;

FIG. 3 is a perspective of the anchor;

FIG. 4 is a left side view of the anchor attached to a wooden member ofthe wooden sub-floor shown in section;

FIG. 5 is a front view of the anchor;

FIG. 6 is a right side view thereof;

FIG. 7 is a left side view thereof;

FIG. 8 is a top view thereof;

FIG. 9 is a rear view thereof;

FIG. 10 is a bottom view thereof;

FIG. 11 is a top view of a metal blank used to form the anchor; and

FIG. 12 is a perspective of another embodiment of an anchor.

Corresponding reference characters indicate corresponding partsthroughout the drawings.

DETAILED DESCRIPTION

Referring to FIGS. 1-3, one embodiment of an anchor for use in a floor,generally indicated at 10, of a building is generally indicated at 100.The floor 10 includes a concrete layer or floor, generally indicated at12, and a wooden layer or sub-floor (broadly, a cellulosic layer),generally indicated at 14, supporting the concrete layer. The woodensub-floor 14 is composed of a plurality of members (e.g., woodenmembers) 16 joined together in a side-by-side arrangement. Generally,the members 16 are made of a material capable of receiving and holdingnails, nailing teeth, dowels and/or screws that are pressed or driveninto the members. For example and without limitation, cellulosicmaterial such as wood and bamboo may be used to form the members 16. Inone embodiment, the members 16 are made of Douglas fir. The woodenmembers 16 may be joined in any suitable manner such as, but not limitedto, by the use of screws, nails, dowels, and/or glue. The wooden members16 have a generally uniform thickness. In one embodiment, the woodenmembers 16 have a thickness of approximately 2 inches (5 cm). As shownin FIG. 1, a plurality of anchors 100 are attached to and between thewooden members 16 and extend upward into the concrete layer, asexplained in more detail below. The anchors 100 connect the concretefloor 12 to the wooden sub-floor 14 so that the floor and subfloor workcooperatively in load resistance. The anchors 100 may also be used tohold and position rebar 18 within the concrete floor 12. Otherconfigurations of the floor are within the scope of the presentdisclosure.

Referring to FIGS. 3-10, the anchor 100 configured to connect theconcrete floor 12 to the wooden sub-floor 14 is shown. The anchor 100includes a first portion 102, a second portion 104 and a third portion106. The first, second, and third portions 102, 104, 106 are generallyplanar. The anchor 100 has a generally J-shape which is inverted whenthe anchor is attached to the wooden sub-floor 14. In the illustratedembodiment, the anchor 100 is formed as a unitary one-piece structure.In one embodiment, the anchor 100 is formed from a metal blank ortemplate 200 cut from a single piece of material (FIG. 11) and bent(e.g., stamped) into shape. The anchor 100 can be formed from a piece ofsheet metal or other suitable material. In one embodiment, the anchor100 is stamped from 18 gauge steel, although other thicknesses (e.g.,10-20 gauge) and other suitable materials are within the scope of thepresent disclosure. Also, other configurations are within the scope ofthe present disclosure. For example, in one embodiment the portions ofthe anchor can be formed separately and attached together. As set forthbelow, in general the anchor 100 is configured to attach to the woodensub-floor 14 and embed into the concrete floor 12 to connect theconcrete floor and wooden sub-floor together. For convenience ofdescription, the orientation of the anchor 100 in FIG. 3 provides thepoint of reference for the terms defining relative locations andpositions of structures and components of the hanger, including but notlimited to the terms “upper,” “lower,” “left,” “right,” “top,” “bottom,”“front,” and back,” as used throughout the present disclosure.

Referring still to FIGS. 3-10, the first portion 102 is generallyrectangular and has opposite upper and lower edge margins, opposite leftand right edge margins, a front face, and a back face. The lower, leftand right edge margins are all free edge margins. The first portion 102has a height extending between the upper and lower edge margins and awidth extending between the left and right edge margins. In oneembodiment, the height of the first portion 102 is about 3.75 inches(9.5 cm) and the width of the first portion is about 4 inches (10 cm).The first portion 102 is configured to be attached one of the woodenmembers 16 of the wooden sub-floor 14. Specifically, the first portion102 is configured to be disposed between two adjacent wooden members andto attach to at least one of said two adjacent wooden members. When thefirst portion 102 is attached to one of the wooden members 16, the firstportion 102 projects upward between two adjacent members of the woodensub-floor 14 into the overlying concrete floor 12.

The first portion 102 includes attachment structure 108 configured toconnect to the one of the wooden members 16. In the illustratedembodiment, the attachment structure 108 is a plurality of nailing teeth110 extending from the first portion 102 in a forward direction. Thenailing teeth 110 may be struck from the first portion 102 and bent intoposition. Other attachment structures such as, but not limited to one ormore openings configured to receive a fastener (e.g., nail or screw),are within the scope of the present disclosure. The attachment structure108 is configured to be disposed completely between the adjacent woodenmembers 16. Accordingly, the attachment structure 108 is adjacent to thelower edge margin of the first portion 102. In the illustratedembodiment, the plurality of nailing teeth 110 are arranged together ina nailing grouping, such as a grid pattern, the nailing grouping havinga height that is less than the height of the wooden members 16 theanchor 100 is attached to. Specifically, the upper most nailing tooth110 of the nailing grouping is disposed on the first portion 102 suchthat the upper most nailing tooth is disposed below the upper surface ofthe wooden sub-floor 14 when the anchor 100 is attached to the woodensub-floor. Preferably, the nailing teeth 110 are disposed on the firstportion 102 so that the nailing teeth are positioned at or near themiddle of the wooden member 16 when the anchor 100 is secured thereon.In one embodiment, the attachment structure 108 includes forty nailingteeth spread out over the width of the first portion 102, although moreor fewer nailing teeth, arranged in other ways are within the scope ofthe present disclosure. For example, a first portion (not shown) may betall enough so as to extend from a bottom edge to the top edge of a sideof a wooden member and have nailing teeth over substantially the fullheight of the wooden member.

The anchor 100 may include one or more locator tabs 114 (two are shown)configured to facilitate the positioning of the anchor on one of thewooden members 16 of the wooden sub-floor 14. Each locator tab 114extends forward from the front face of the first portion 102 (e.g.,extends in a direction that is normal or perpendicular to and away fromthe front face of the first portion). Each locator tab 114 is generallyrectangular and has opposite left and right edge margins, opposite frontand back edge margins, a top face, and a bottom face. The left, rightand front edge margins are all free edge margins. The back edge marginof each locator tab 114 is integral or continuous with the front face ofthe first portion 102. Each locator tab 114 is generally perpendicularto the first portion 102. Each locator tab 114 has a length extendingbetween the front and back edge margins and a width extending betweenthe left and right edge margins. Preferably, the length of each locatortab 114 is longer than a length of the nailing teeth 110 so that thelocator tabs 114 are able to engage the top surface of the wooden member16 in order to position the anchor on the wooden member, as discussed inmore detail below, before the nailing teeth are driven into the woodenmember. In one embodiment, the length of each locator tab 114 is about0.75 inch (2 cm) and the width of each locator tab is about 0.25 inches(0.6 cm). Each locator tab 114 may be stamped (e.g., struck and bent)from a portion of the first portion 102. Other configurations of thelocator tab are within the scope of the present disclosure.

The locator tabs 114 are configured to position the anchor 100 on one ofthe wooden members 16 of the wooden sub-floor 14. The bottom face ofeach locator tab 114 is configured to engage the top surface of thewooden member 16 in order to position the anchor 100 at the correctheight along the side of the wooden member the anchor is attached to. Asshown in FIG. 4, when the locator tabs 114 engage the top surface of thewooden member 16 and the first portion 102 engages a side surface of thewooden member, the anchor 100 is disposed at the correct position (e.g.,height) relative to the wooden sub-floor 14 and the nailing teeth areroughly centered on the side of the wooden member. In other words, thelocator tabs 114 facilitate the positioning of the anchor 100 within thefloor 10. As discussed in more detail below, the second and thirdportions 104, 106 are embedded (e.g., disposed) within the concretefloor 12 when the anchor 100 is in the correct portion relative to thewooden sub-floor 14.

Accordingly, the locator tabs 114 are disposed at a positionintermediate of the upper and lower edge margins of the first portion102. Preferably, the locator tabs 114 are disposed at a position nearthe middle between the upper and lower edge margins of the first portion102. In one embodiment, the each locator tab 114 is spaced apart fromthe lower edge margin of the first portion 102 by a distance that isabout 2.25 inches (5.7 cm). Thus, the one or more locator tabs 114divide the first portion 102 into a lower section extending between thelower edge margin of the first portion and the locator tabs that isconfigured to be embedded in the wooden sub-floor (e.g., disposedbetween adjacent wooden members 16) and an upper section extendingbetween the locator tabs and the upper edge margin of the first portionthat is configured to be embedded in the concrete floor 12 (e.g., extendupward from the wooden sub-floor into the concrete floor). Accordingly,the attachment structure 108 is disposed completely within this lowersection of the first portion 102 (e.g., the attachment structure isdisposed between the lower edge margin of the first portion and thelocator tabs 114) in order to attach to one of the wooden members 16.

The anchor 100 may also include one or more shear tabs 116 (two areillustrated) configured to strengthen the connection between theconcrete floor 12 and wooden sub-floor 14 provided by the anchor.Specifically, the shear tabs 116 (broadly, tabs) are configured toincrease the shear strength between the concrete floor 12 and the woodensub-floor 14 provide by the anchor. Each shear tab 116 extends forwardfrom the front face of the first portion 102. Each shear tab 116 isgenerally semi-circular and has opposite left and right faces, a backedge margin and an opposite arcuate (e.g., semi-circular) front edgemargin. The front edge margin is a free edge margin. The back edgemargin of each shear tab 116 is integral or continuous with the frontface of the first portion 102. Each shear tab 116 is generallyperpendicular to the first portion 102. Each shear tab 116 has a radiusand, in one embodiment, the radius is about 0.375 inch (1 cm). Eachshear tab 116 may be stamped (e.g., struck and bent) from a portion ofthe first portion 102. Other configurations and arrangements of theshear tab are within the scope of the present disclosure.

The one or more shear tabs 116 are configured to be embedded into theconcrete floor 12 to increase the strength of the connection provided bythe anchor 100 between the concrete floor and the wooden sub-floor 14.Accordingly, the shear tabs 116 are disposed within the upper section ofthe first portion 102 in order to be embedded within the concrete floor.In other words, the shear tabs 116 are disposed between the locator tabs114 and the upper edge margin of the first portion 102. Preferably, theshear tabs 116 are disposed approximately half way between the locatortabs 114 and the upper edge margin of the first portion 102. Whenembedded in the concrete floor 12, the shear tabs 116 resist movement ofthe anchor 100 relative to the concrete floor. Specifically, the leftand right faces of the shear tabs 116 engage the concrete floor 12 andprevent the anchor 100 from moving in a left and/or right directionrelative to the concrete floor. The shear tabs 116 increase the surfacearea of the anchor 100 in profile that engages the concrete floor 12 tospread out the force applied to the concrete floor by the anchor whenthe anchor is subject to a force in the left and/or right directions.This additional surface area provided by the shear tabs 116 prevents theanchor 100 from cutting through and/or cracking the concrete floor 12.In a similar manner, the portions of the front and back faces in theupper section of the first portion 102 prevent the anchor 100 frommoving in a front and/or back direction relative to the concrete floor12.

Still referring to FIGS. 3-10, the second portion or flange 104 extendsforward from the upper edge margin of the first portion 102 (i.e.,extends transverse to the first portion). In the illustrated embodiment,the second portion 104 is generally rectangular and has opposite leftand right edge margins, opposite front and back edge margins, a topface, and a bottom face. The left and right edge margins are both freeedge margins. The back edge margin of the second portion 104 is integralor continuous with the upper edge margin of the first portion 102. Thefirst and second portions 102, 104 are generally perpendicular to oneanother. The second portion 104 and locator tabs 114 are generallyparallel to one another. The second portion 104 has a length extendingbetween the front and back edge margins and a width extending betweenthe left and right edge margins. Preferably, the width of the secondportion 104 is the same as the width of the first portion 102. In oneembodiment, the length of the second portion 104 is about 1 inch (2.5cm) and the width of the second portion is about 4 inches (10 cm).

The second portion 104 is configured to be embedded in the concretefloor 12. When the anchor 100 is attached to the wooden sub-floor 14,the first portion 102 is configured to position the second portion 104within the concrete floor 12 so that the concrete in the concrete floorsurrounds the second portion. In other words, the first portion 102 hasa height that is less than a height of the floor 10 (e.g., the combinedheight of the concrete floor 12 and wooden sub-floor 14) and, moreparticularly, has a height that positions the second portion betweenupper and lower surfaces of the concrete floor 12 when the anchor 100 isattached to the wooden sub-floor. Preferably, the first portion 102 isconfigured to position the second portion 104 at or near the middle ofthe concrete floor 12. The second portion 104 is configured to engageand support rebar 18 or other members within the concrete floor 12. Asshown in FIG. 1, the second portion 104 can support rebar 18 within theconcrete form 22 while the concrete is poured to form the concrete floor12. The second portion 104 may include one or more openings 120configured to receive a concrete tie (not shown) in order to secure therebar 18 to the second portion 104.

The third portion or lip 106 extends downward (e.g., in a directionparallel to the front face and toward the lower edge margin of the firstportion 102) from the front edge margin of the second portion 104,generally transverse to the second portion. In the illustratedembodiment, the third portion 106 is generally rectangular and hasopposite left and right edge margins, opposite upper and lower edgemargins, a front face, and a bottom face that faces the front face ofthe first portion 102. The lower, left and right edge margins are allfree edge margins. The upper edge margin of the third portion 106 isintegral or continuous with the front edge margin of the second portion104. The third and second portions 106, 104 are generally perpendicularto one another. The third and first portions 106, 102 are generallyparallel to one another. Thus, first and third portions 102, 106 lie inparallel and spaced apart planes. The third portion 106 has a heightextending between the upper and lower edge margins and a width extendingbetween the left and right edge margins. Preferably, the width of thethird portion 106 is the same as the width of the first and secondportions 102, 104. In one embodiment, the height of the third portion106 is 0.25 inches (0.6 cm) or 0.5 inches (1.3 cm) and the width of thethird portion is about 4 inches (10 cm).

As with the second portion 104, the third portion 106 is configured tobe embedded in the concrete floor 12. Much like the second portion 104,when the anchor 100 is attached to the wooden sub-floor 14, the firstportion 102 is configured to position the third portion 106 within theconcrete floor 12 so that the concrete in the concrete floor surroundsthe third portion. Thus, the height of the third portion 106 is lessthan the distance between the second portion 104 and the woodensub-floor 14 and, preferably, significantly less so that the lower edgemargin of the third portion is sufficiently spaced apart from the woodensub-floor 14 to permit concrete to flow there-between. In oneembodiment, when the anchor 10 is attached to the wooden member 16, thelower edge margin of the third portion 106 is spaced apart from thewooden member 16 by about 1.25 inches (3.2 cm). The first, second andthird portions 102, 104, 106 define a receiving space or channel 112(see, FIGS. 6 and 7) configured to receive concrete of the concretefloor 12 to secure the anchor 100 to the concrete floor. When theconcrete is poured to form the concrete floor, the concrete flows aroundthe third portion 106 and into the receiving space 112. Anchor 100 isbelieved to form a stronger connection with the concrete floor 12 overprevious anchors because concrete is more likely to flow around thecomponents of the anchor 100 into the large receiving space 112 thanthrough the holes used in previous anchors. The third portion 106 adds asecond 90 degree bend to the anchor 100, the first 90 degree bend beingbetween the first and second portions 102, 104, to increase the strengthof the connection between the anchor and the concrete floor 12 andprevent the anchor 100 from being pulled out of the concrete floor.

Referring to FIGS. 1, 2 and 4, in use, the one or more anchors 100 areused to connect the concrete floor 12 to the wooden sub-floor 14. Theplurality of anchors 100 can be placed in to the wooden sub-floor 14 inany type of arrangement such as, but not limited to, a grid pattern asshown in FIG. 1. In one embodiment, the grid pattern is a one foot byone foot grid pattern, although other sizes are within the scope of thepresent disclosure. In one embodiment, the plurality of anchors 100 arerandomly or otherwise non-uniformly arranged. Once the particulararrangement of the plurality of anchors 100 is determined, each anchor100 is attached to the side of one of the wooden members 16. Each anchor100 is arranged so that the attachment structure 108, more particularlythe nailing teeth 110, overlie the side of the wooden member with thesecond and third portions 104, 106 disposed above the wooden member. Ifthe anchor 100 includes locator tabs 114, the locator tabs are placed onthe top surface of the wooden member 16 to position the anchor at thecorrect height on the wooden member. Once in position, the nailing teeth110 of each anchor 100 are pressed into the side of the wooden member 16to secure the anchor thereto. Each anchor 100 may be pressed into thewooden member 16 in any suitable manner such as, but not limited to, bya roller or other press. Other ways of attaching the first portion 102to the wooden member 16 may be used within the scope of the presentinvention.

Once all the anchors 100 are secure to their respective wooden members16, the wooden members are joined together in a side-by-side arrangementto form the wooden sub-floor 14, with each anchor extending above thewooden sub-floor. The concrete form 22 is then constructed above thewooden sub-floor and any reinforcement, such as rebar 18, is positionedtherein (see, FIG. 1). The rebar 18 can be secured to the anchors 100using ties (not shown) and the openings 120 in the second portions 104of the anchors. Concrete is then poured over the wooden sub-floor 14surrounding the portion of the anchors 100 above the wooden sub-floor toform the concrete floor 12. The concrete flows around the upper sectionof the first portion 102, the second portion 104, the third portion 106and, if included, the shear tabs 116, embedding these components in theconcrete floor 12. The concrete also flows into the receiving space 112.The concrete then cures over the wooden sub-floor and around the anchors100 to form the concrete floor 12. In this manner, the anchors 100 unifyor connect the concrete floor 12 to the wooden sub-floor 14. In oneembodiment, the floor 10 is formed at a worksite or construction site,although it is contemplated that the floor can formed at a manufacturingfacility and transported to the worksite.

Referring to FIG. 12, another embodiment of the anchor is generallyindicated by reference numeral 100′. Anchor 100′ is similar to anchor100 and, thus, for ease of comprehension, where anchor 100′ includesanalogous or identical elements to that of anchor 100, identicalreference numbers are used. Accordingly, it is understood that thedescription related to anchor 100 also applies to anchor 100′. Thedifference between anchors 100 and 100′ is that anchor 100′ includes atab 116′ (broadly, one or more) instead of shear tabs 116. However, inthis configuration, the tab 116′ is generally parallel to the secondportion 104 (unlike, shear tabs 116 which are generally perpendicular tothe second portion). Tab 116′ is generally larger than shear tab 116 butis still generally perpendicular to the first portion 102. In oneembodiment the tab 116′ has a radius of about 0.75 inch (2 cm). Tab 116′is configured to be embedded within the concrete floor 12. However, inthis embodiment, the tab 116′ doubles functionally as a locator tab andis configured to position the anchor 100′ on one of the wooden members16 of the wooden sub-floor 14. The bottom face of the tab 116′ isconfigured to engage the top surface of the wooden member 16 in order toposition the anchor 100 at the correct height along the side of thewooden member the anchor is attached to. In this embodiment, the tab116′ is generally aligned (e.g., horizontally aligned) with the locatortabs 114. In other words, the tab 116′ (broadly, at least one of theshear tabs) is generally co-planar with the locator tabs 114 (broadly,at least one of the locator tabs). Although the anchor 100′ is shownwith locator tabs 114 in this embodiment, it is understood that theanchor may not include the locator tabs. The top and bottom faces of thetab 116′ engage the concrete floor 12 and the wooden sub-floor 14,respectively, to prevent the anchor 100′ from moving vertically in thefloor 10. In one embodiment, in addition to tab 116′, the anchor 100′may also include one or more shear tabs 116.

Having described the invention in detail, it will be apparent thatmodifications and variations are possible without departing from thescope of the invention defined in the appended claims. For example,where specific dimensions are given, it will be understood that they areexemplary only and other dimensions are possible.

When introducing elements of the present invention or the preferredembodiment(s) thereof, the articles “a”, “an”, “the” and “said” areintended to mean that there are one or more of the elements. The terms“comprising”, “including” and “having” are intended to be inclusive andmean that there may be additional elements other than the listedelements.

In view of the above, it will be seen that the several objects of theinvention are achieved and other advantageous results attained.

As various changes could be made in the above products without departingfrom the scope of the invention, it is intended that all mattercontained in the above description and shown in the accompanyingdrawings shall be interpreted as illustrative and not in a limitingsense.

1-20. (canceled)
 21. An anchor for connecting a concrete layer of afloor to a cellulosic layer of the floor, the cellulosic layercomprising a plurality of cellulosic members joined together in aside-by-side arrangement, the anchor comprising: a first portion havinga height and configured to be disposed within the concrete layer whenthe first portion is attached to the cellulosic layer; and a secondportion extending from the upper edge margin in a first direction thatis transverse to the first portion, the second portion configured to bespaced apart from the cellulosic layer and embedded within the concretelayer of the floor to attach the anchor to the concrete layer; a thirdportion extending from an edge margin of the second portion in adownward direction that is transverse to the second portion, the thirdportion having a height less than the height of the first portion andbeing configured to be spaced apart from the cellulosic layer andembedded within the concrete layer of the floor to attach the anchor tothe concrete layer.
 22. The anchor as set forth in claim 21 furthercomprising a tab struck from the first portion and connected to theanchor.
 23. The anchor as set forth in claim 22 wherein the tab isgenerally perpendicular to a remainder of the first portion.
 24. Theanchor as set forth in claim 23 wherein the tab has a curved periphery.25. The anchor as set forth in claim 22, wherein the first, second andthird portions define a receiving space configured to receive a portionof the concrete layer to attach the anchor to the concrete layer. 26.The anchor as set forth in claim 21, wherein the second portion includesone or more openings configured to receive a concrete tie to securerebar to the second portion.